/Engine/Source/Runtime/CoreUObject/Public/Blueprint/BlueprintSupport.h
static void ReparentHierarchies ( const [TMap](API\Runtime\Core\Containers\TMap)< [UClass](API\Runtime\CoreUObject\UObject\UClass) *, [UClass](API\Runtime\CoreUObject\UObject\UClass) * > & OldClassToNewClass )